Principle Inversion of Control

In software engineering, inversion of control (IoC) is a programming technique, expressed here in terms of object-oriented programming, in which object coupling is bound at run time by an assembler object and is typically not known at compile time using static analysis.

In object-oriented programming, there are several basic techniques to implement inversion of control. These are:

1. using a factory pattern
2. using a service locator pattern
3. using a dependency injection, for example:
   1. a constructor injection
   2. parameter injection
   3. a setter injection
   4. an interface injection
4. using a contextualized lookup

see more about dependency injection

http://www.c-sharpcorner.com/UploadFile/akkiraju/dependency-injection-techniques-explained-part-1/